Interface IReplicator

An interface for replicating files. Allows a producer to Publish(IRevision) IRevisions and consumers to CheckForUpdate(String). When a client needs to be updated, it is given a SessionToken through which it can ObtainFile(String, String, String) the files of that revision. After the client has finished obtaining all the files, it should Release(String) the given session, so that the files can be reclaimed if they are not needed anymore.

A client is always updated to the newest revision available. That is, if a client is on revision r1 and revisions r2 and r3 were published, then when the client will next check for update, it will receive r3.

Namespace: Lucene.Net.Replicator

Assembly: Lucene.Net.Replicator.dll

Syntax

public interface IReplicator : IDisposable

Remarks

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

Methods

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CheckForUpdate(String)

Check whether the given version is up-to-date and returns a SessionToken which can be used for fetching the revision files, otherwise returns null.

Declaration

SessionToken CheckForUpdate(string currentVersion)

Parameters

Type	Name	Description
System.String	currentVersion

Returns

Type	Description
SessionToken

Remarks

NOTE: When the returned session token is no longer needed, you should call Release(String) so that the session resources can be reclaimed, including the revision files.

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ObtainFile(String, String, String)

Returns an for the requested file and source in the context of the given Id.

Declaration

Stream ObtainFile(string sessionId, string source, string fileName)

Parameters

Type	Name	Description
System.String	sessionId
System.String	source
System.String	fileName

Returns

Type	Description
Stream

Remarks

NOTE: It is the caller's responsibility to call on the returned stream.

Exceptions

Type	Condition
SessionExpiredException	The specified session has already expired

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Publish(IRevision)

Publish a new IRevision for consumption by clients. It is the caller's responsibility to verify that the revision files exist and can be read by clients. When the revision is no longer needed, it will be Release(String)d by the replicator.

Declaration

void Publish(IRevision revision)

Parameters

Type	Name	Description
IRevision	revision	The IRevision to publish.

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Release(String)

Notify that the specified SessionToken is no longer needed by the caller.

Declaration

void Release(string sessionId)

Parameters

Type	Name	Description
System.String	sessionId